1(*
2    Title:      Standard Basis Library: Unix socket structure and signature.
3    Author:     David Matthews
4    Copyright   David Matthews 2000, 2005, 2016
5
6    This library is free software; you can redistribute it and/or
7    modify it under the terms of the GNU Lesser General Public
8    License version 2.1 as published by the Free Software Foundation.
9    
10    This library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14    
15    You should have received a copy of the GNU Lesser General Public
16    License along with this library; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18*)
19
20signature UNIX_SOCK =
21sig
22    type unix
23    type 'sock_type sock = (unix, 'sock_type) Socket.sock
24    type 'mode stream_sock = 'mode Socket.stream sock
25    type dgram_sock = Socket.dgram sock
26    type sock_addr = unix Socket.sock_addr
27    val unixAF : Socket.AF.addr_family
28    val toAddr : string -> sock_addr
29    val fromAddr : sock_addr -> string
30    structure Strm :
31    sig
32        val socket : unit -> 'mode stream_sock
33        val socketPair : unit -> 'mode stream_sock * 'mode stream_sock
34    end
35    structure DGrm :
36    sig
37        val socket : unit -> dgram_sock
38        val socketPair : unit -> dgram_sock * dgram_sock
39    end
40end;
41
42structure UnixSock : UNIX_SOCK =
43struct
44    abstype unix = ABSTRACT with end;
45    type 'sock_type sock = (unix, 'sock_type) Socket.sock
46    type 'mode stream_sock = 'mode Socket.stream sock
47    type dgram_sock = Socket.dgram sock
48    type sock_addr = unix Socket.sock_addr
49
50    val unixAF : Socket.AF.addr_family =
51        case Socket.AF.fromString "UNIX" of
52            NONE => raise OS.SysErr("Missing address family", NONE)
53        |   SOME s => s
54
55    local
56        val doCall: int * string -> sock_addr
57            = RunCall.rtsCallFull2 "PolyNetworkGeneral"
58    in
59        fun toAddr s = doCall(56, s)
60    end
61
62    local
63        val doCall: int * sock_addr -> string
64            = RunCall.rtsCallFull2 "PolyNetworkGeneral"
65    in
66        fun fromAddr s = doCall(57, s)
67    end
68
69    structure Strm =
70    struct
71        fun socket() = GenericSock.socket(unixAF, Socket.SOCK.stream)
72        fun socketPair() = GenericSock.socketPair(unixAF, Socket.SOCK.stream)
73    end
74    structure DGrm =
75    struct
76        fun socket() = GenericSock.socket(unixAF, Socket.SOCK.dgram)
77        fun socketPair() = GenericSock.socketPair(unixAF, Socket.SOCK.dgram)
78    end
79
80end;
81